Slidable seat for vehicles and the like



Sept. 18, 1928. 1,684,944

A. W. CHAPMAN SLIDABLE SEAT FOR VEHICLES AND THE LIKE Filed July 31, 1926 5 Sheets-Sheet 1 5 Sheets-Sheet 2 W WLW WW Sept. 18, 1928.

A. w. CHAPMAN SLIDABLE SEAT FOR VEHICLES AND THE LIKE Filed July 51, 1926 Kw Q QN W QN MN ww \w I l-I-lll-Illl lili lamb. i A H J.

V I I Sept. 18, 1928. 1,684,944

A. W. CHAPMAN SLIDABLE SEAT FOR VEHICLES AND THE LIKE Filed July 31, 1926 5 Sheets-Sheet 3 Sept. 18, 1928.

A. W. CHAPMAN SLIDABLE SEAT FOR VEHICLES AND THE LIKE Filed July 31, 1926 5 Sheets-Sheet 4 INVENTOR .(r/(Mr Mil/2901M?! H ML BY M M ATTORNEY Sept. 18, 1928.

A. W. CHAPMAN SLIDABLE SEAT FOR VEHICLES AND THE LIKE Filed July 31, 1926 5 Sheets-Sheet 5 Patented Sept. 18, 1928.

PATENT OFFICE.

ARTHUR WILLIAM CHAPMAN, LONDON, ENGLAND.

SLIDABLE SEAT FOR VEHICLES AND THE LIKE.

Application filed July 81, 1926, Serial No. 126,191, and in Great Britain July 15, 1925.

My invention relates to improvements in means for guiding movable members, such as seats or the like, from one position to another and for retaining the same against movement in certain of said positions; and the invention has for its object more particularly to provide a simple, reliable and efiicient dev ce which is inexpensive to produce and which may be conveniently installed or placed in position on a motor vehicle or elsewhere without unduly obstructing the floor or space receiving the same.

Further, said invention has for its object to provide a device of the character specified in which the seat or seats thereof adapted for motor vehicles, such as sedans, cou s and the like having alimited number of oors or entrances, may be readily shifted so that the passen gers or occupants thereof may conven ently and comfort ably enter or leave the vehicles through said doors or entrances.

Further, said invention has for its ob ect to provide a device of the character specified in which the seat may be readily shifted from one osition to another with very little effort on t 1e part of the passenger or person moving the same.

Further, said invention has for its ob'ect to provide a device of the character s eci ed 1n which the shiftable seat may be rea 11y locked in certain of the positions thereof to retain the sa'me rigidly in position, and readily released to permit of the free movement thereof.

Further, said invention has for its object to provide a device of the character specified in which the seat or sliding member and the guiding means therefor slidably interlock to maintain said seat against lateral movement from its line of travel and against se aration from its guiding means, whereby to acilitate the movement of said seat from one position to another and to permit of the same being held rigidly in each position.

Further, said invention has for its ob'ect to P provide a device of the character speci ed in which the locking means or anchoring memher for said seat or shiftable member is continuously adjustable along the line of travel of said seat or shiftable member to vary the locking position thereof.

Further, said invention has for its object to provide a device of the character specified in which the locking means or anchoring memher may be readily adjusted by the passenger or occupant of the seat while he is seated so as to position said seat, when the same is locked, in such position that the legs of the operator may be comfortably disposed in convenient relation to the edals and other controls of the motor vehic e or the like.

Further, said invention has for its ob'ect to provide a device of the character speci 'ed in which the seat may be readily released manually from said adjustable anchorin member in each position thereof, and quickFy shifted to a position permitting of the convenient entry and exit of the assengers or occupants of the vehicle, and t en quickly returned to automatically lock with said anchoring member in the same position thereof without requiring readjustment of said anchorin member to the position found suitable for t e particular occupant of the seat.

Further, said invention has for its object to provide a device of the character specified in which the adjustable looking or anchoring member is arranged to grip the uiding member therefor in each position thereof and to increase its gripping action in accordance with the stresses-to be resisted, so that, should the same be left inadvertently in unsecured condition, an backward movement of the seat or move is member enga d therewith will cause said anchoring mem er to cant or tilt, and thus hold said seat or movable member rigidly in osition.

Further, sai invention has for its object to provide a device of the character specified in which the looking or anchoring member is continuously adjustable along the line of travel of the seat or shiftable member and may be readily secured rigidly in each position by the occupant of the seat and readily released.

Further, said invention has for its object to provide a device of the character specified in which the seat in certain positions thereof on its guiding means may be readily disenaged therefrom to ermit of its removal rom the vehicle or t e like and readily replaced in. interlocking engagement with said guiding'means.

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Further, said invention has for its object to provide a device of the character specified in which the guiding means slidably supporting, the anchoring member for the seat also serves to guide said seat from one position to another relative to said anchoring member.

Further said invention has for its object to provide a device of the character specified in which the parts may be readily secured to the uneven surt aces of the seat and floor or wall with the relatively slidable parts properly aligned to permit ol' the tree movement thereof relative to each other without binding.

Other objects will in part be obvious and in part be pointed out hereinafter.

To the attainment of ill? aforesaid objects and ends my imention consists in the novel details of construetimn and in the combination connection and arrangement ol parts hereinafter more t'ullv de crilunl and then pointed out in the claims.

In the aecompan ving dra wings showing an illustrative embodiment ot the invention Figure 1 is a perspective showing one form of device constructed according to and cmbodying my said invention Fig. 2 is a side elevation thereot' with parts in section:

Fig. fl is an elevation showing another t'orm of runner or seat support inc :n'raunement;

Fig. 4 is a detail tral'isverse section ol the looking or anchoring device shown at Figs. 1 am 2;

Fig. ii is a detail view ot' a moditied form of locking or anchoring device;

Fig. t3 is a detail section of a special mounting tor a slide block;

Fig. i is a detail end elevation showing a slide blot-h engaged within a channel member;

Figs. 8 J, and 10 are plans of various lavouts of slide and locking means for seats;

Fig' 11 is a perspective showing another itornrot device constructed according to and embodying my said invention;

Fig. His a longitudinal section thereof;

Fig. 133 is a detail. transverse section on the line 13-13 ot Fin. 1) looking at the anchoring member or locking device; and

Fig. 1 1 is a detail transverse section through one of the rail engaging slides.

Referring to the drawings (Figs. 1. E2 4 and 7), the seat 1 (illustrated in broken lines) has a base or frame or other part to which at the bottom thereot is attached a part ot the seat guiding and supptn'ting, means. including the rollers 33 secured to the opposite sides of the t'rame 2 and adapted to run on the strips or rails 4 seenrral to the floor of the vehicle and the guiding membe' 5 in the form of a channel piece having at dovetail groove or channel 5 therein and secured by means of the bolts 6 to the rear part of said base between the rollers 3. The guiding member 5 within the channel 5* intermediate its ends is provided with recesses or slots 7 adapted to register with and receive a cooperating guiding means mounted on the tioor or other part of the vehicle and adapted to ride within the dovetail channel 5 of the member 5. This guiding means on the [loor prefcrably consists ot a base portion 8 attached by bolts 1) to the floor of the vehicle and a pedestal 10 having: a reduced portion ill extending into the channel 5" and horizontal surfaces 10* on Which the edges of the member 5 slides. The pedestal portion 10 has formed thereon a guide element 11 corresponding in cross section with the dovetail groove or channot it and adapted to be received therein through the slots 7, and to slidably fit the same. A tapering portion 11 is formed on the top of the element 11 for guiding the same to t'acilitate the entry thereot' into the chan nel tr of member 5 through the slots T. A removable bolt or stop 12 extends through the channel member near the slots or reduced portions T and is adapted to engage the pedestal it! when the seat is moved to its rearmost position to prevent the element 11 from registering with the slots 7, whereby to normally maintain the parts 5 and 11 in interlocking sliding engagement against separation. The member or stop 12 may be readily removed through the frame member When the stop 12 is removed the element 11 may be made to register with the slots 7 to permit of the separation 01 the parts.

An additional slide block or guiding member it is secured to the base memlarr :2 ol the seat at the front edge thereof and cooperates with and slidablv engages a guidingmember or slide rail 1.? tixcd to the floor in alignment with the channel member 5 and rear pedez-tal 10. In the form of the invention here illustrated the guiding member 15, like the memher 5 consists of a channel piece having: a dovetail channel or groove 15 therein adapted to receive another guiding element 11 which is adapted to register with the slots or recesses 15 to permit of the recc iition ot' the second. element 11 into said channel 1.? in interlocking slidable engagement therewith to maintain the parts against separation. The member 1-1-includc; a pedestal portion 10 like the corresponding portion ll) of the rear pedestal which rests upon the eth cs of the channel member 15. as indicated at 1th. The member or element 11 of the guide block it is similar in shape to the eorres mndiun element 1 t ot the rear pedestal 1t). A fixed stop lti near the slots 15 serves to limit the barkward II'IOVQI'IlQlltI of the seat so that; when the salt is in its rearmost position (the stop 12 beimr removed) the elements 11 will exactly register with their respective reiwsses or slots 'i' and 15 to permit ol the disengagement thcreot from the guiding Inentluyrs 15 and 8 to remove the seat. (hen the stop 12 in position the guiding elements 11 are prevent ed from registering with the slots 7 and 15 The channel members 5 and 15 may overlap when the seat is in its forward position for use, as shown at Figs. 1 and 2. The seat is thus evenly supported and guided by the rollers 3 and by the guiding members 5 and 8, and 14 and 15, and is positively maintained thereby against lateral movement from its line of travel and against vertical movement.

Formed integrally with the guiding member 14 are forwardly projecting ears 17. Pi voted at 17 between said cars 17 is a catch or locking member 18 normally held in depressed position by means of a spring 18", and having a catch slot 18 therein adapted to receive a pin or studs 19 mounted upon a cooperating locking or anchoring member 20 likewise slldably engaging the guiding member 15. The catch 18 is provided with a camlike guiding surface 18. which, when the seat is moved forwardly, engages the pin 19 and automatically actuates the catch 18 and guides the same into locking engagement with the pin 19 to hold the seat in )osition. The seat may be readily released 1y lifting the catch 18.

The anchoring element 20, which determines the locked position of the seat, is continuously adjusta le to a plurality of positions on the guiding member 15 along the line of travel of the seat to vary the position at which the seat is to be locked. For this purpose the member 20 includes a portion 21 extending into the channel 15" of the member 15 for suitably guiding the same, and means for locking or securing the same in each position. The locking means for the anchoring member 20 extends loosely through an opening 21 in the anchoring member and, in the particular embodiment of the invention illustrated, includes a threaded stem 22 having a nut 23 threaded upon the upper projecting end thereof. The nut 23 has a conical portion 23 adapted to engage the inner side of the semiannular upper portion or boss 24 on the anchoring member 20. The stem 22 has formed thereon at its lower end a head 25 loosely fitting within and conforming to the channel 15, the ends 25 (Fig. 4) of said head 25 being formed angularly to conform to the inclination of the walls of the channel member 15. The round lower surface of said head 25 bears on the bottom surface of the channel 15". The spring 25" serves to restore the stem 22 to its inoperative position when the nut 23 is loosened. \Vhen the nut 23 is tightened the anchoring member 20 is clamped down on the guiding member 15, and the stem 22 is simultaneously turned through a small angle, because of the conical portion 23 bearim on the abutment 24, and this angular or tilting movement causes the head 25 to jam or grip firmly in the channel 15 of the slide rail 15 to firmly secure the anchoring member 20 in each position. The member 20 may be readil released to permit of the adjustment thereo At Fig. 5 is shown another form of anchoring member, designated at 26, to which through the pin 19 the seat may be secured in any of a plurality of positions. The member 26, like the member 20, slidably engages the slide rail 15 and extends into the channel 15 thereof. Ri idly associated with the member 26 is a T-bo t 27 having a head 27 dis osed within and fitting the channel 15, con orming in shape thereto. The member 26 has formed thereon an arm 28 through which is threaded a manually operable bolt or screw 29 adapted to bear on the bottom of the chan- 1101. When the screw 29 is tightened the body 26 slightly tilts or angularly moves, thereby causing the head 27 within the channel 15 to jam within or securely grip the channel member 15 to rigidly hol the anchoring member 26 in adjusted position.

At Fig. 3 is illustrated a modified form of guiding and supporting means which may be substituted for the rollers 3 and tracks 4 of Fig. 1, or which may be convenientl employed, for example, when the floor of t e car is carpeted. In this form two rollers 30 are provided at each side of the seat base 2 and a suitable belt 31 is disposed around the rollers 30 forming an endless track support for the seat.

At Fig. 6 is shown a modified form of rear guide block designed to overcome difliculties in securing proper ali mnent of the parts when the same are litte or assembled whereby to permit of the free movement of the interlocking parts relative to each other without binding.

As illustrated the pedestal portion 10 has a convex lower portion 10 adapted to be received within a concave plate 10 secured to the floor by means of the bolts 9. The guiding element 11 having the portion 11 thereon is secured to the part 10 by means of the bolt stem 11 which asses through the art 10 and through a hole in the concave mem er 10 the hole being of sutlicient size to permit angular movement of the stem 11 and part 10 relative to the member 10 The art 10 and bolt stem 11 are retained in osition by means ofthe concave head 11 on t 1e bolt working over the underside of the member 10 At Figs. 8, 9, and 10, I have illustrated a few of the various combinations or arrangements in which the different guiding and supporting means herein described may be assembled or fitted upon the floor or other part of the motor vehicle to meet the requirements of each installation, the type of guide rail 15 shown at Figs. 1 and 2 being employed, as one example, to illustrate the various arrangements and combinations.

At Fig. 8 the broken line indicates the seat base 2 at each corner of which is mounted a roller in a suitable mounting 32. The rollers travel in grooved tracks 32 arranged upon the floor at opposite sides of the guide rail 15 thereon, the tracks 32 serving to prevent lateral movement of the scat from its line of travel as the same is guided on the rail lai At Fig. 9 the seat hase El ih'arries at one a channel member 33 slidahly engaging guide l)l( lt'l S fixed to the floor, while a similar channel memher ill is attached to the seat base :3 at the opposite side in alignment with the guide rail 17 and slidalily engages a. guide hlork 3-1 on the floor. the seat heing sup iiortci'l at three points.

At Fig. 10 another form of three point s11pport is shown in which the guiding memliers 33 are secured to the floor at opposite sides oi the guide rail 1.? thereon in this arraugw ment the guidihloclrs SH are secured to the rear of the seat hose 2 and sl idahly engage. the Incnihers 33. In all of the a 'angements ahove dcscrihed, the guide hlorlrs 14 are at tached to the front of the seat hase and slidahly engage the slide rails 15. The sad. in each arrangement is thus evenly supported. at three or more points and is maintained against lateral movement in its travel to and from locking positions. The nlel'uhcrw l l and Bi. also slidahly interior-l; as (lc-scrilt-ed in connection with Figs. 1 and "l. to prevent the separation thcrcot as the scat moves. itrinu one position to another. and the members il like the memhers l5. may he provided with removal recesses or slots to permit of the seats heing disengaged therefrom and removcd. The seat in its t'iiirivard positiiiin may he loclrcd h v means oi the catch W to the anchoring nicmher E311 held in adjusted position hy the manually operable llltliilH-l i i.

At Figs. 21 to it is illustrated another em hodimcnt ot my." said invention which I at present consider the pret'errci'l form. 1 illustruted the guide rails for the seat in this form con ts ot' our or more parallel rods or bars in and ill; ot suitahle cross sei'tioau ln-ofcrahllv cylindrical in cross section The rods or guide rails and llti are cheap and effective. and arr readily swured in positi e: upon the fl or or other part of the vehicle hv means ot the holt i'li' at the ends lher ot adapted to pass throuflh the floor A. The rails and .lli are suitahlv spaced from the door l| v moans oi the distance washers 13 1 of the required thickness.

llrarltcts or slide cages fl. and 46 are secured to the liottoul or other part of tin seat 1 adjacent. to the corners thereof. and a: irovided With cars il hctween which the slide lllUt'liF or niemhers t? are pivoted. on transverse axes ift. llarh slide lilo k or meuiher 453 is" provided with a recess 44 conforming to and adaptral to receive the slide rails iii; and 36. wherehy the seat. is supported on said rails in inlerlo mg sliding engagn meut. therewith to maintain said seat against sop aration therefrom and to maintain the same against lateral movement from its line of travel. The slide blocks 42, being pivoted, automati ally align with the guide rails to run easily thereon without binding, and hence compensate longitudinally for inaccurate alignment of the parts due to inequalities of the tloor hoard and seat. The rails 35 and 36, hring cylindrical in cross section. permit of the engagement of the slides 42 therewith irrespective of slight ditl'ercnces in the space iug of said rails from the support on which the same are mounted.

The seat together with the slide hlocks 42 may he readily removed from the rails 35 a lid till hy causing the slide blocks to register with the scat withdrawal slots or recesses 45 on the guide rails 3-35 and 36. forming reduced portions thereon. The seat may then be readily removed by lifting the same past the slots, and the same may be replaced in like manner. Spring members or clips 46 engage the rear ends of the rails and 36 in roximity to the rear slots 45 in the path of truvei ot' the scat to form a combined stop and liutl'er limiting the rearward movement of the seat. and normally preventing the slide lilochs from registering with the slots 45. lihen the lneniloers 46 are raised. the seat may he moved into alignment with the slots 45 to permit of the removal of the seat. The rear securing devices 37 also serve as stops to prevent the seat from sliding oil of the rails at the rear thereof.

A suitable catch 47 is pivoted at 48 to the liraclcet 39 and is maintained normally depressed hv means of the spring 49. The lateral flanges of the catch 47, which is preferahlv channel-shaped, are provided with recesses 50 adapted to receive the pin 51 disposed transverselv upon the upper rear portion of an anchoring memher or stop 52 which slidahlv emhraces the slide rod 35 at the forward extended end thereof and is held thereon against separation. The for *ard portions of the lower edges 53 of the catch "W constitute guiding means adapted to initiallv engage the pin 51 and guide said catch automaticallv into locking engagement therewith when the seat is moved to its forward position.

The anchoring member 52 includes a forked or claw-like portion or hridle 54 cn1- bracing and slidahle upon the rail 35. and a. forwardly extending arm or portion 55 having a threaded opening therein in which is threaded a finger bolt or thumh-srrriv 56 engaging at its inner end the slide rail The opening Within the portion 5% is such as to receive the rail 35. and the portion 54 so engages said rail as to prevent transverse movement of the Inemher 5E2 thereon as an axis and to permit of a limited angular movement of the member 52 relative to the longitudinal is of said rail.

In operation, the anchoring member 52,

when t e screw 56 is manually actuated to release the same, may be continuously adjusted along the rail 35 to any of a plurality of positions thereon so that the seat, when the same is locked to the member 52, will be in such position that the occupants legs will be comfortably arranged in the most-convenient position relative to the pedals or other controls of the motor car.

When the thumb-screw 56 is tightened, the anchorin member 52 cents or moves angularly so t at the claw-like portion 54 thereof, and also the screw 56, binds upon or rigid- 1yt grips the rail 35 to securely lock the an- 0 oring member thereto. The seat, when the same is locked to the anchoring member 52, is rigidly held hereby and by the guiding means therefor against movement in all directions.

Should the screw 56 be left loose inadvertently when the seat is locked to the anchoring member 52 any sliding movement or slipping of the seat backwards will cause said anchorin member 52 to automatically cant or tilt an firmly grip the rail to hold said seat against any further movement.

The tilting action of the anchoring member 52 is facilitated by imparting a rearwardly and u wardly extending taper to the rear centre portion 54' ofvthe inner surface of the claw-like art 54 in engagement with the top of the rail 35 to slightly increase the size of the rail receiving opening of said part 54 at the rear compared to the forward portion of said 0 ening, the ta ering surface havin a slight y shorter radius than that of the orward portion of said surface. The anchoring member 52 may be readil released by the manipulator thereof while e is seated and continuously adjusted to the desired position. The same is readil locked or unlocked by a slight movement 0 the fingers. The anchoring member 52 also serves as an adjustable stop or abutment in the path of travel of the seat to limit the movement thereof in one direction.

The upwardly projecting forward end of the catch 47 may be readily engaged by the fingers to release the seat to shift the same to a rear position to permit of the entry or exit of the assengers or occupants of the car. When t e seat is returned into locked position, the catch 47 automatically engages the in 51. The seat in its travel is firmly held 1n position on the guide rail or rails against lateral and vertical movement.

The operation of the device shown at Figs. 1 and 2 is also substantially like that of the device just described."

The devices embodying my said invention are inexpensive to manufacture, and may be readily and conveniently installed, modified, if desired, to meet the requirements of each installation, as illustrated at Figs. 8, 9, and

10. The devices occupy very little space and do not unduly obstruct the floor space or interfere with the controlling mechanism.

The anchoring member is continuously adjustable and may be manually actuated in each position to tilt and firmly grip the slide rail on which the same slides, and the same, even when unlocked, automatically cents to hold the scat against inadvertent movement, the gripping action increasin in accordance with the stresses to be resiste In my said invention, the anchorin member and seat are entirely separate. W en the hook 47 is released the seat is free to run back to facilitate entry or exit, and the seat upon bein returned to the chosen position is automatically locked there, thus the adjustment is not lost and the occupant, although he has moved the seat for temporary convenience, is assured that the seat upon its return will be locked in the precise position which he previously found to be suitable.

Further, although the seat has an interlockin sliding engagement with its slide rail or rai s to maintain the same firmly in each position thereon, yet the same may be readily disenga ed therefrom, when necessary, and remove to permit of access to the fioor board for repairs, or to permit of the use of the seat outside of the car.

Havin thus described my said invention what I c aim and desire to secure by Letters Patent is:

1. A device of the character described comprising a guiding member, an anchoring memer slidably mounted thereon to permit of the adjustment of the device for leg length, manually operable means carried by said anchoring member for securing the same in predetermined adjusted positions on said guldmg member, a seat member movable along the line of travel of said anchoring member, and manually operable means for securing said seat member to said anchoring member in each position thereof and for releasing said scat to permit of the movement thereof relative to said anchoring member.

2. A device of the character described comprising un anchoring member, means for securing said anchoring member in a plurality of predetermined ositious to permit of the adjustment of the evice for leg length, a seat member slidable relative to said anchoring member, and manually operable means for positively locking said seat member to said anchorin member in position adjusted for leg length and for releasing said scat member to permit of the free sliding movement thereof relative to said anchoring member.

3. A device of the character described comprising a guiding member, an anchoring member slidable thereon to permit of the adjustment of the device for leg length, a manually operable member carried by said anchoring member and adapted to engage Ill said guiding member for frictionally retaining said anchoring member in a plurality of predetermined positions thereon, a seat member movable relative to said anchoring member, means for guiding said seat member in its travel, and means for detachably securing said seat member to said anchoring member to retain said seat member in a predetermined position adjusted for leg length.

4. A device of the character described comprising a guiding rail, an anchoring member slidable thereon, means for securing said anchoring member thereon in a plurality of positions adjusted for leg length, a seat member slidably mounted on said rail and guided thereon relative to said anchoring member, and manually operable means for detachably securing said scat member to said anchoring member in the adjusted position thereof.

5. A device of the character described comprising a rail, :1 seat member slid-able longitudinally of said rail, a member independent of said seat member slidablc on said rail along the line of travel of said seat member and constituting an adjustable locating stop serving to limit the movement of said seat member in one direction, and means for locking said stop to said rail in a plurality of predetermined adjusted positions to permit of the adjustment of the device for leg length.

6. A device of the character described roan prising a guiding member, an anchoring member slidahle thereon and angularly movable into gripping engagement therewith, and means for tilting said anchoring member and maintaining the same in adjusted positions on said guiding member.

7. A device of the character described comprising a guiding member, an anchoring member slidable thereon and capable of limited tilting movement relative thereto, and a manually operable screw carried by said anchoring member and engaging said guiding member for angularly moving said anchoring member into gripping engagement with said guiding member.

8. A device of the character described comprising a guiding member, an anchoring member slidable thereon and having a limited angular movement relative thereto; said members having port-ions engaging each other to maintain the same against separation, manually adjustable means carried by said anchoring member for tilting the same to cause said engaging portions to frictionally grip each other to hold said anchoring member in adjusted positions, and a movable member adapted to engage said anchoring member to be held in position thereby; said member upon movement thereof in one direction serving to tilt said anchoring member to cause the same to automatically lock should said adjustable means he in unlocked position.

9. A device of the character described com.-

prising a guiding member, an anchoring member slidable thereon and angularly movable relative thereto; said members having portions engaging each other to maintain said members against separation, manually operable means carried by said anchoring member at one end thereof and engaging said guiding member for tilting said anchoring member to cause the same at the opposite end thereof to frictionally engage said guiding member whereby said anchoring member is maintained in adjusted positions on said guiding member.

10. A device of the character described comprising a guiding member, an anchoring member slid-able thereon and angularly movable relative thereto; said members having portions engaging each other to maintain the same against separation, manually operable means carried by said anchoring member at one end thereof and engaging said guiding member for tilting saidanchoring member to cause the same at the opposite end thereof to irictionally grip said guiding member to: maintaining said anchoring member in adjusted positions. and means on the upper portion of said anchoring member at said last named end for engagement with a member to be held in adjusted position by said anchoring member.

11. A device of the character described comprising a guiding member, an anchoring member slidable thereon and having a lim ited angular movement relative thereto; said members having portions engaging each other to maintain the members against separation, a manually operable threaded member extending through said anchoring member at one end thereof and adapted to engage said guiding member to tilt said anchoring n'icmber to cause said engaging portions thereof to frie tionally grip each other, and studs projecting from the upper portion of said anchoring member at the opposite end thereof and adapted to he engaged by a member to beheld in position by said anchoring member.

12. A device of the character described comprising sliding scat member, an anchoring member. means for securing said anchoring member in a. plurality of positions on the line of travel of said scat member, and a pivoted catch for locking said Peat member to said anchoring member in each position thereof.

13. A device of the character described comprising a guiding member, on anchoring member slidable thereon, manually operable means for se uring said anchoring member in a plurality of positions on said guiding member. a separate seat member slidable relative to said anchoring member, and movable means for securing said scat member to said anchoring member in each position thereof; said movable means being manually operable to release said scat member to permit of the freemovement thereof rclativeto said anchorlltt fit]

ing member, and means associated with said movable means to cause the same to automatically lock said seat member to said anchoring member as said seat is moved into engagement therewith.

14. A device of the character described comprising a guiding member, an anchoring member slidable thereon, manually operable means for retaining said anchorin member in a plurality of positions on said guiding member, a member movable relative'to said anchoring member, and a pivoted catchadapted to lock said last named member to said anchoring member in each position thereof.

15. A device of the character described comprising a guiding rail, an anchoring member slidable thereon, manually operable means carried by said anchoring member for securing the same to said rail in a plurality of positions, a seat member slidable relative to said anchoring member and guided in its travel on said rail, and a catch pivotally mounted on said seat member and adapted to engage said anchoring member to secure said scat member thereto in each position thereof.

16. A device of the character described comprising a slide rail, means for securing said slide rail in position, an anchoring member slidably embracing said slide rail and having a limited angular movenu-nt relative thereto, means carried by said anchoring member for tilting the same into gripping engagement with said rail to secure the same in a plurality of positions thereon, a sliding member for supporting a seat embracing said rail and slidable thereon independently of said anchoring member, and a pivoted catch carried by said sliding member and adapted to engage said anchormg member.

17. A device of the character described comprising a su port, a seat movable on said supdport, an anc ioring member adjustable on sea support to a plurality of positions in the line of travel of said seat, a plurality of parallel sliding connections between the seat and the support serving to evenly support said seat and to maintain the same in its line of travel towards and from said anchoring member; certain of said connections including interlocking relatively slidable members serving to maintain said seat against movement laterally and against separation from said support, and means for securing said seat to said anchoring member in each position thereof.

18. A device of the character described comprising a lurality of parallel slide rails, a plurality 0 seat supporting members engaging said slide rails and slidable thereon, an anchoring member engaging certain of said slide rails and slidable thereon, means for securing said anchoring member in a plurality of positions on its slide rail, and a catch on an adjacent scat supporting member cooperating with said anchoring member to secure said seat against movement on said guide rails.

19. A device of the character described comprising a rod constituting a slide rail, an anchoring member embracing said rod and slidable thereon. means for clamping said anchoring member to said rod in a plurality of positions thereon seat supporting members embracing said rod and slidable thereon, and means carried by certain of said seat supporting members adapted to engage said anchoring member to retain said seat in position.

20. A device of the character described comprising a plurality of parallel rods constitutin guide rails, seat supporting members cm iracing said rods and slidably interlocking therewith to maintain said seat supporting members thereon against removal and lateral movement, an anchoring member embracing certain of said rods and slidable thereon, means for securing said anchorin member in adjusted positions on its rod, ant means for detachably securing said seat to said anchoring member.

21. A device of the character described comprising a guide rail, separate members engaging said rail and slidable thereon, a seat, and a movable connection between said seat and each of said slide members to permit of said slide members evenly engaging said rail to slide freely thereon.

22. A device of the character described comprising a guide rail, 1 seat, brackets attached to said seat at the bottom thereof, and members pivoted to said brackets on axes extending transversely of said rail and slidably engaging said rail.

23. A device of the character described comprising a plurality of parallel guide rails, means for securing said rails to a support, a seat, brackets secured to said seat at the bottom thereof, and members movably supported on said brackets and slidably engaging said rails.

24. device of the character described comprising a rod constituting a guide rail, a seat, brackets attached to said seat at the bottom thereof, members pivoted to said brackets on axes extending transversely of said rail; said lllEll'llltBIS embracing said rail and slidably interlocking therewith to prevent lateral movement of said seat and theseparation thereof from said rail during its sliding movement, an anchoring member slidably embracing said rail, means for securing said anchoring member in adj ustcd position thereon, and a catch pivoted to one of said brackets and adapted to engage said anchoring member.

25. A device of the character described comprising a slide rail, an anchoring member engaging said slide rail and adapted to slide along the same to permit of the adjustment of the device for leg length, means for securing means on said seat member and said guide rail adapted to register with each other to permit of the engagement and disengagement of said seat member and said siidc rail, and a step on said rail for preventing the registra tion of said last named means.

ARTHUR \VILLIAM CHAPMAN.

CERTIFICATE OF CORRECTION.

Patent No. 1, 684, 944.

Granted September 18, 1928, to

ARTHUR WILLIAM CHAPMAN.

It is hereby certified that enter eppenrs in the above numbered patent requiring correction as follows: Page 1, in the heading to the printed specification, line 4.

date of filing application in Great Britain, for "July 15, 1925" read "August 15,

1925"; and the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 23rd day of October, A. D. 1928.

(Soul) M. J. Moore,

Acting Commissioner of Patents.

means on said seat member and said guide rail adapted to register with each other to permit of the engagement and disengagement of said seat member and said siidc rail, and a step on said rail for preventing the registra tion of said last named means.

ARTHUR \VILLIAM CHAPMAN.

CERTIFICATE OF CORRECTION.

Patent No. 1, 684, 944.

Granted September 18, 1928, to

ARTHUR WILLIAM CHAPMAN.

It is hereby certified that enter eppenrs in the above numbered patent requiring correction as follows: Page 1, in the heading to the printed specification, line 4.

date of filing application in Great Britain, for "July 15, 1925" read "August 15,

1925"; and the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 23rd day of October, A. D. 1928.

(Soul) M. J. Moore,

Acting Commissioner of Patents. 

